I have 2 Jack Dempseys in my 90 gal along with some other fish, they're only about 3" just now. I only planned on getting one but when I ordered one from my lfs 2 came instead so he gave the the second one free. I know i'm going to have to get rid of one of them but I can't decide what one! One is really dark, almost black, and has alot of colour and the other is alot lighter with a bit less colour. The problem is that the dark one has started chasing my firemouth, my acara and the other JD about the tank but the lighter coloured one has never bothered anyone. Should I just get rid of the dark one (my favourite of the two) and keep the lighter coloured one? Is the dark one likely to cause havoc as he gets older or could the lighter one just end up the same?